I've done some digging around and found a lot of references to the newer Canon bodies that have this feature. One reference to Nikon's D3 & D300 and little else. One reference talked about DC Settings for the D200 (never heard of them) so there doesn't seem to be a lot of cameras around that have this useful function.I saw a couple of cropped examples of the difference microadjustment can make and it's noticeable straight out of the camera.

I take it that it is seperate to having lenses aligned or tuned by Canon or Nikon et al?